A tube coupling nut with the shank end accommodating a smaller tube size than is accommodated by the tube fitting which connects to the threaded end.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5910-01-363-9515
NSN 5950-01-384-1060
NSN 5835-00-711-3371
NSN 6240-01-071-2127
NSN 6610-00-290-0758
NSN 5925-01-218-8302
NSN 5835-01-462-5983
NSN 5910-01-384-2665
NSN 5998-01-534-9984
NSN 6130-00-074-1437
NSN 6220-00-773-8483
NSN 5925-00-368-1291